from datetime import datetime, timedelta
import time
from flask import render_template, request, current_app, session, redirect, url_for, g, jsonify, abort

from info import constants, db
from info.models import User, News, Category
from info.response_code import RET
from info.utils.common import user_login_data
from info.utils.image_storage import storage
from . import admin_blu


@admin_blu.route('/news_type', methods=['get','post'])
def news_type():
    if request.method == 'GET':
        try:
            categories = Category.query.all()
        except Exception as e:
            current_app.logger.error(e)
            return render_template('admin/news_edit_detail.html', errmsg="查询失败")

        category_dict_li = []
        for category in categories:
            category_dict_li.append(category.to_dict())

        category_dict_li.pop(0)

        data = {
            'categories': category_dict_li
        }

        return render_template('admin/news_type.html', data=data)

    # 获取参数
    cname = request.json.get('name')
    cid = request.json.get('id')

    if not cname:
        return jsonify(errno=RET.PARAMERR, errmsg='参数不足')

    if cid:
        try:
            cid = int(cid)
            category = Category.query.get(cid)
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.PARAMERR, errmsg='参数错误')

        if not category:
            return jsonify(errno=RET.NODATA, errmsg='未查询到数据')

        category.name = cname

    else:
        category = Category()
        category.name = cname
        db.session.add(category)

    return jsonify(errno=RET.OK,errmsg='OK')


@admin_blu.route('/news_edit_detail', methods=['get','post'])
def news_edit_detail():
    if request.method == 'GET':
        news_id = request.args.get('news_id')

        if not news_id:
            abort(404)

        try:
            news_id = int(news_id)
        except Exception as e:
            current_app.logger.error(e)
            return render_template('admin/news_edit_detail.html', errmsg="参数错误")


        news = None
        try:
            news = News.query.get(news_id)
        except Exception as e:
            current_app.logger.error(e)
            return render_template('admin/news_edit_detail.html', errmsg="未查询到此新闻")

        # 查询分类
        try:
            categories = Category.query.all()
        except Exception as e:
            current_app.logger.error(e)
            return render_template('admin/news_edit_detail.html', errmsg="查询失败")

        category_dict_li = []
        for category in categories:
            cate_dict = category.to_dict()
            if category.id == news.category_id:
                cate_dict['is_selected'] = True
            category_dict_li.append(cate_dict)

        # 移除最新分类
        category_dict_li.pop(0)

        data = {
            'news': news.to_dict(),
            'categories': category_dict_li
        }

        return render_template('admin/news_edit_detail.html', data=data)

    # 取到post进来的参数
    news_id = request.form.get('news_id')
    title = request.form.get('title')
    digest = request.form.get('digest')
    content = request.form.get('content')
    index_image = request.files.get('index_image')
    category_id = request.form.get('category_id')

    # 判断是否有值
    if not all([news_id, title, digest, content,category_id]):
        return jsonify(errno=RET.PARAMERR,errmsg='参数不足')

    try:
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.NODATA,errmsg='未查询到新闻数据')

    # 尝试读取图片
    if index_image:
        try:
            index_image = index_image.read()
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.PARAMERR, errmsg='参数错误')

    # 将标题图片上传
        try:
            key = storage(index_image)
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.THIRDERR, errmsg='上传错误')
        news.index_image_url = constants.QINIU_DOMIN_PREFIX + key

    # 设置相关数据
    news.title = title
    news.digest = digest
    news.content = content
    news.category_id = category_id

    return jsonify(errno=RET.OK,errmsg='OK')


@admin_blu.route('/news_edit')
def news_edit():
    """新闻编辑"""
    page = request.args.get("p", 1)
    keywords = request.args.get("keywords", "")
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    news_list = []
    current_page = 1
    total_page = 1

    try:
        filters = []
        # 如果有关键词
        if keywords:
            # 添加关键词的检索选项
            filters.append(News.title.contains(keywords))

        # 查询
        paginate = News.query.filter(*filters) \
            .order_by(News.create_time.desc()) \
            .paginate(page, constants.ADMIN_NEWS_PAGE_MAX_COUNT, False)

        news_list = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)

    news_dict_list = []
    for news in news_list:
        news_dict_list.append(news.to_basic_dict())

    data = {
        "total_page": total_page,
        "current_page": current_page,
        "news_list": news_dict_list
    }

    return render_template('admin/news_edit.html', data=data)


@admin_blu.route('/news_review_action', methods=['post'])
def news_review_action():
    news_id = request.json.get('news_id')
    action = request.json.get('action')

    if not all([news_id,action]):
        return jsonify(errno=RET.PARAMERR, errmsg='参数错误')

    if action not in('accept', 'reject'):
        return jsonify(errno=RET.PARAMERR, errmsg='参数错误')

    try:
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR, errmsg='数据查询失败')

    if not news:
        return jsonify(errno=RET.NODATA,errmsg='未查询到数据')

    if action == 'accept':
        news.status = 0
    else:
        reason = request.json.get('reason')
        if not reason:
            return jsonify(errno=RET.PARAMERR, errmsg='请输入拒绝原因')
        news.status = -1
        news.reason = reason

    return jsonify(errno=RET.OK, errmsg="操作成功")


@admin_blu.route('/news_review_datail/<int:news_id>')
def news_review_detail(news_id):

    news = None
    try:
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)

    if not news:
        return render_template('admin/news_review_detail.html', errmsg='未查询到此新闻')


    data = {
        'news': news.to_dict()
    }

    return render_template('admin/news_review_detail.html', data=data)


@admin_blu.route('/news_review')
def news_review():
    # 获取用户数据
    page = request.args.get('p', 1)
    keywords = request.args.get('keywords', None)
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    news_list = []
    current_page = 1
    total_page = 1
    try:
        filters = [News.status != 0]
        if keywords:
            filters.append(News.title.contains(keywords))
        paginate = News.query.filter(*filters).order_by(News.create_time.desc()).paginate(page, constants.ADMIN_NEWS_PAGE_MAX_COUNT, False)
        news_list = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)

    news_dict_li = []
    for news in news_list:
        news_dict_li.append(news.to_review_dict())

    data = {
        'current_page': current_page,
        'total_page': total_page,
        'news_list':news_dict_li
    }
    return render_template('admin/news_review.html', data=data)


@admin_blu.route('/user_list')
def user_list():
    # 获取用户数据
    page = request.args.get('p', 1)
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    users = []
    current_page = 1
    total_page = 1
    try:
        paginate = User.query.filter(User.is_admin == False).order_by(User.last_login.desc()).paginate(page, constants.ADMIN_USER_PAGE_MAX_COUNT,False)
        users = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)

    user_dict_li = []
    for user in users:
        user_dict_li.append(user.to_admin_dict())

    data = {
        'current_page': current_page,
        'total_page': total_page,
        'users': user_dict_li
    }

    return render_template('admin/user_list.html', data=data)


@admin_blu.route('/user_count')
def user_count():
    # 总人数
    total_count = 0
    try:
        total_count = User.query.filter(User.is_admin == False).count()
    except Exception as e:
        current_app.logger.error(e)

    # 月增加人数
    mon_count = 0
    t = time.localtime()
    begin_mon_date = datetime.strptime(('%d-%02d-01' % (t.tm_year, t.tm_mon)), "%Y-%m-%d")
    try:
        mon_count = User.query.filter(User.is_admin == False, User.create_time > begin_mon_date).count()
    except Exception as e:
        current_app.logger.error(e)

    # 日增加人数
    day_count = 0
    begin_day_date = datetime.strptime(('%d-%02d-%02d' % (t.tm_year, t.tm_mon, t.tm_mday)), '%Y-%m-%d')
    try:
        day_count = User.query.filter(User.is_admin == False, User.create_time > begin_day_date).count()
    except Exception as e:
        current_app.logger.error(e)

    # 折线图
    active_date = []
    active_count = []

    today_date_str = datetime.strptime(('%d-%02d-%02d' % (t.tm_year, t.tm_mon, t.tm_mday)), '%Y-%m-%d')

    for i in range(0,31):
        begin_date = today_date_str - timedelta(days=i)
        end_date = today_date_str - timedelta(days=i-1)
        count = User.query.filter(User.is_admin == False,
                                  User.last_login >= begin_date,
                                  User.last_login < end_date).count()
        active_count.append(count)
        active_date.append(begin_date.strftime('%Y-%m-%d'))

    active_date.reverse()
    active_count.reverse()

    data = {
        'total_count': total_count,
        'mon_count': mon_count,
        'day_count': day_count,
        'active_count': active_count,
        'active_time': active_date
    }

    return render_template('admin/user_count.html', data=data)


@admin_blu.route('/index')
@user_login_data
def index():
    user = g.user
    data = {
        'user': user.to_dict() if user else None
    }
    return render_template('admin/index.html', data=data)


@admin_blu.route('/login', methods=['get', 'post'])
def login():
    if request.method == 'GET':
        user_id = session.get('user_id', None)
        is_admin = session.get('is_admin', False)
        if user_id and is_admin:
            return redirect(url_for('admin.index'))

        return render_template('admin/login.html')
    # 获取参数
    username = request.form.get('username')
    password = request.form.get('password')
    # 判断参数
    if not all([username, password]):
        return render_template('admin/login.html', errmsg='参数不足')

    try:
        user = User.query.filter(User.mobile == username, User.is_admin == True).first()
    except Exception as e:
        current_app.logger.error(e)
        return render_template('admin/login.html', errmsg='用户信息查询失败')

    if not user:
        return render_template('admin/login.html', errmsg='未查询到用户信息')

    if not user.check_password(password):
        return render_template('admin/login.html', errmsg='用户名或密码不正确')

    session['user_id'] = user.id
    session['nick_name'] = user.nick_name
    session['mobile'] = user.mobile
    session['is_admin'] = user.is_admin

    # 登录成功需跳转到后台管理页面
    return redirect(url_for('admin.index'))
